.all-screen {
  height: 100vh;
  width: 100vw;
}

.rain-container {
  position: fixed;
  top: 0;
  bottom: 0;
  left: 0;
  right: 0;
  display: flex;
  background: #000;
  p {
    line-height: 1;
  }
  span {
    display: block;
    width: 2vmax; 
    height: 2vmax; 
    font-size: 2vmax; 
    color: #9bff9b11;
    text-align: center;
    font-family: "Helvetica Neue", Helvetica, sans-serif;
  }
}